Device for measuring friction torque of planetary roller screw pair

Abstract

The invention discloses a device for measuring the friction torque of a planetary roller screw pair, and relates to the technical field of planetary roller screws. The device comprises a working platform, the upper side of the working platform is rotatably matched with a rotating plate, the upper side of the rotating plate is fixedly matched with a first T-shaped plate, and the upper side of the rotating plate is slidably matched with a second T-shaped plate. Through the arrangement of the second T-shaped plate, the planetary roller screw body is positioned on one side of the first T-shaped plate under the action of the second T-shaped plate, and the auxiliary friction torque of the planetary roller screw body is measured through the pull pressure sensor, so that on one hand, the planetary roller screw body is convenient to replace, and on the other hand, the auxiliary friction torque of the planetary roller screw body is measured; on the other hand, the efficiency of replacing the planetary roller screw body is improved, and on the other hand, the efficiency of measuring the auxiliary friction torque of the planetary roller screw body is improved, so that the process of measuring the auxiliary friction torque of the planetary roller screw body is more convenient.

Description

Technical Field

[0001] The invention belongs to the field of planetary roller screws, and in particular relates to a device for measuring the friction torque of a planetary roller screw pair. Background Art

[0002] The friction torque of the planetary roller screw pair is one of the important factors affecting the performance of the planetary roller screw, so the measurement of friction force and friction torque plays an important role in the performance evaluation of the planetary roller screw pair. The friction in the planetary roller screw transmission generates a lot of heat. The increase in temperature reduces the lubrication effect between the long thread spindle and the nut of the planetary roller screw, resulting in energy loss during the planetary roller screw transmission.

[0003] The patent application with the announcement number CN117288461A discloses a device for measuring the friction torque of a planetary roller screw pair. The description of the patent application discloses in paragraph 0036 that: when two locking circular plates clamp the planetary roller screw workpiece, the personnel loosen the second engagement plate so that the telescopic straight rod retracts to the inner side of the telescopic sleeve by stretching the rebound force of the first spring, and the telescopic straight rod drives the second engagement plate and the first engagement plate to engage with each other through the engagement teeth. The nut of the planetary roller screw workpiece is inserted into the inner periphery of the clamp ring, and the outer peripheral surface of the nut of the planetary roller screw workpiece engages with the locking teeth of the inner side wall of the clamp ring. The nut of the planetary roller screw workpiece and the clamp ring are detachably mounted, and the nut of the planetary roller screw workpiece and the clamp ring rotate synchronously.

[0004] However, in actual use, it is necessary to slide the second bite plate first, and the second bite plate first releases the positioning of the first bite plate, and then drives the driving gear to rotate through the first bite plate, and the driving gear drives the limit cross plate to slide through the screw gear, and the limit cross plate clamps the planetary roller screw workpiece on one side of the limit vertical plate through the limit vertical plate. This process will reduce the efficiency of replacing the planetary roller screw workpiece, thereby reducing the efficiency of measuring the friction torque of the planetary roller screw workpiece pair.

[0005] The patent application with the announcement number CN105954017A discloses a device for measuring the friction torque of a planetary roller screw pair. The description of the patent application discloses in paragraph 0023 that: the planetary roller screw pair is placed on the base plate, and the inclination angle of the base plate is adjusted by the jack, thereby changing the inclination angle of the screw; then, it is kept at a fixed angle value. The motor is turned on, and the power is transmitted to the screw through the pulley mechanism. The screw rotates around its own axis and drives the nut to move linearly; when the nut moves linearly, it is loaded by the spring, and the nut not only moves linearly but also rotates itself, but when it rotates, the tension and pressure sensor prevents its rotation, so that the nut only maintains linear motion without rotating itself. The force that the tension and pressure sensor prevents the nut from rotating is the friction force on the nut, and then multiplied by the force arm, the friction torque is obtained, and the friction torque is the friction torque of the planetary roller screw pair; the measuring device can measure the friction torque of the screw at different inclination angles relative to the test bench under loading.

[0006] However, in actual use, the pressure sensor needs to be rotated by the nut and quickly removed by the nut, which reduces the efficiency of repairing the damaged pressure sensor and reduces the pressure sensor's measurement of the friction force exerted on the nut.

[0007] Therefore, a device for measuring the friction torque of a planetary roller screw pair is proposed to solve the above-mentioned drawbacks. Summary of the invention

[0008] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a device for measuring the friction torque of a planetary roller screw pair.

[0009] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0010] A device for measuring the friction torque of a planetary roller screw pair, comprising a working platform, a rotating plate rotatably matched on the upper side of the working platform, a first T-shaped plate fixedly matched on the upper side of the rotating plate, a second T-shaped plate slidably matched on the upper side of the rotating plate, both sides of the second T-shaped plate meshing with the upper side of the rotating plate, a planetary roller screw body being snap-fitted between one side of the second T-shaped plate and one side of the first T-shaped plate;

[0011] A first connecting column is fixedly fitted on the upper side of the rotating plate, and a plurality of tension and pressure sensors are evenly and fixedly fitted on both sides of the first connecting column. The tension and pressure sensors are snap-fitted with the planetary roller screw body.

[0012] Optionally, the bottom of the working platform is fixedly fitted with two U-shaped plates, one of the U-shaped plates is provided with a first guide groove on both sides, a sliding plate is slidably fitted inside the first guide groove, a first servo motor is fixedly fitted inside the first guide groove, a threaded rod is fixedly fitted at the output end of the first servo motor, a threaded hole is provided on one side of the sliding plate, and the threaded hole is threadedly fitted with the threaded rod.

[0013] Optionally, a first fixed column is fixedly fitted between one ends of the two sliding plates, a second guide groove is provided on one side of the working platform, a third guide groove is provided on one side of the rotating plate, a second fixed column is fixedly fitted inside the third guide groove, a first rotating column is rotatably fitted between the second fixed column and the first fixed column, and the first rotating column is located inside the second guide groove.

[0014] Optionally, a first through hole is formed at one end of the first rotating column, and the first fixing column is located inside the first through hole; a second through hole is formed at the other end of the first rotating column, and the second fixing column is located inside the second through hole.

[0015] Optionally, two fixing blocks are fixedly fitted on the upper side of the working platform, a third through hole is opened on one side of the fixing block, and fixing rods are fixedly fitted on both sides of the rotating plate, and the fixing rods are located inside the third through holes.

[0016] Optionally, a fourth through hole is provided on one side of the first T-shaped plate, and a second rotating column is rotatably fitted inside the fourth through hole. A plurality of guide blocks are evenly distributed and fixedly fitted on the outer walls at both ends of the second rotating column, and the guide blocks are affixed to one side of the first T-shaped plate. A first cross-shaped groove is provided on one end of the second rotating column, and a first cross-shaped plate is fixedly fitted on the first end of the planetary roller screw body, and the first cross-shaped plate is located inside the first cross-shaped groove.

[0017] Optionally, a fifth through hole is provided on one side of the second T-shaped plate, a third rotating column is rotatably fitted inside the fifth through hole, a second servo motor is fixedly fitted on one side of the second T-shaped plate, one end of the third rotating column is fixedly fitted on the output end of the second servo motor, a second cross-shaped groove is provided on the other end of the third rotating column, the second end of the planetary roller screw body is fixedly fitted with a second cross-shaped plate, and the second cross-shaped plate is located inside the second cross-shaped groove.

[0018] Optionally, a placement plate is fixedly fitted on the upper side of the rotating plate, two side plates are fixedly fitted on the upper side of the placement plate, the first connecting column is fixedly fitted on one side of the side plate, a clamp ring is provided on the planetary roller screw body, and one end of the clamp ring cooperates with the tension and pressure sensor.

[0019] Optionally, a first spring is fixedly fitted on one side of the first T-shaped plate, a block is fixedly fitted on one end of the first spring, the block is slidably fitted on the circumferential side of the planetary roller screw body, one end of the block is fitted with the tension and pressure sensor, grooves are provided on both sides of the second T-shaped plate, a second connecting column is fixedly fitted inside the groove, a third servo motor is fixedly fitted on one side of the second connecting column, a rotating shaft is fixedly fitted on the output end of the third servo motor, a gear is fixedly fitted on one end of the rotating shaft, a plurality of teeth are evenly distributed and fixedly fitted on the upper side of the rotating plate, and the teeth are meshed with the gear.

[0020] Optionally, both ends of the first connecting column are provided with a fourth guide groove, and two second springs are fixedly fitted inside the fourth guide groove, a first clamping column is fixedly fitted between one ends of the two second springs, one end of the first clamping column is provided with a clamping groove, one side of the side plate is provided with a fifth guide groove, a sixth guide groove connected to the fifth guide groove, a seventh guide groove connected to the sixth guide groove, and an eighth guide groove connected to the seventh guide groove, one end of the first clamping column is located inside the fifth guide groove, a third spring is fixedly fitted inside the eighth guide groove, one end of the third spring is fixedly fitted with the second clamping column, the second clamping column is slidably fitted inside the eighth guide groove, the sixth guide groove, the seventh guide groove and the fifth guide groove, one end of the second clamping column is clamped and fitted with the clamping groove, and a driving groove is provided on one side of the second clamping column.

[0021] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all the advantages described below at the same time:

[0022] 1. A second T-shaped plate is provided to position the planetary roller screw body on one side of the first T-shaped plate under the action of the second T-shaped plate, and the secondary friction torque of the planetary roller screw body is measured by a tension pressure sensor. On the one hand, it is convenient to replace the planetary roller screw body and improve the efficiency of replacing the planetary roller screw body. On the other hand, it improves the efficiency of measuring the secondary friction torque of the planetary roller screw body, making the process of measuring the secondary friction torque of the planetary roller screw body more convenient.

[0023] 2. A first guide groove is provided, so that the sliding plate slides inside the first guide groove under the action of the threaded rod, and the sliding direction of the sliding plate is guided by the first guide groove, thereby reducing the problem of the sliding plate tilting during sliding and improving the stability of the sliding plate during sliding;

[0024] 3. The eighth guide groove is provided so that the second clamping column can slide inside the eighth guide groove under the action of the staff, and the sliding direction of the second clamping column is guided by the eighth guide groove, thereby reducing the problem of the second clamping column tilting during sliding and improving the stability of the second clamping column during sliding;

[0025] 4. The fourth through hole is set so that the first cross-shaped plate drives the second rotating column to rotate inside the fourth through hole under the action of the planetary roller screw body, and the rotation direction of the second rotating column is guided by the fourth through hole, thereby reducing the problem of tilting of the second rotating column during rotation and improving the stability of the second rotating column during rotation.

[0026] The specific implementation modes of the present invention are further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings described below are only some embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0028] In the figure:

[0029] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the present invention;

[0030] Figure 2 It is a bottom view structural schematic diagram of an embodiment of the present invention;

[0031] Figure 3 This is a schematic diagram of the structure of a first T-shaped plate and a second T-shaped plate according to an embodiment of the present invention;

[0032] Figure 4 A schematic diagram of the structure of a rotating plate according to an embodiment of the present invention;

[0033] Figure 5 This is a schematic diagram of a first spring structure according to an embodiment of the present invention;

[0034] Figure 6 This is a schematic diagram of the structure of a planetary roller screw body according to an embodiment of the present invention;

[0035] Figure 7 This is a schematic diagram of the placement plate structure according to an embodiment of the present invention;

[0036] Figure 8 A schematic diagram of a cross-sectional structure of an embodiment of the present invention Figure 1 ;

[0037] Fig. 9 A schematic diagram of a cross-sectional structure of an embodiment of the present invention Figure 2 .

[0038] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0039] Working platform 100, U-shaped plate 101, first guide groove 102, sliding plate 103, threaded rod 104, threaded hole 105, second guide groove 106, first fixed column 107, first rotating column 108, first through hole 109, rotating plate 110, fixed block 111, third through hole 112, fixed rod 113, third guide groove 114, second fixed column 115, second through hole 116, first T-shaped plate 117, second T-shaped plate 118, fourth through hole 119, second rotating column 120, guide block 121, first cross groove 122, first cross plate 123, planetary roller screw body 124, second servo motor 1 25. fifth through hole 126. third rotating column 127. second cross-shaped groove 128. second cross-shaped plate 129. placement plate 130. side plate 131. first connecting column 132. tension pressure sensor 133. clamp ring 134. block 135. first spring 136. groove 137. second connecting column 138. rotating shaft 139. gear 140. teeth 141. fourth guide groove 142. fifth guide groove 143. first clamping column 144. second spring 145. clamping groove 146. sixth guide groove 147. seventh guide groove 148. eighth guide groove 149. third spring 150. second clamping column 151. driving groove 152.

[0040] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0041] The present invention will now be described in further detail with reference to the accompanying drawings.

[0042] See also Figure 1-9 As shown, in this embodiment, a device for measuring the friction torque of a planetary roller screw pair is provided, comprising a working platform 100, a rotating plate 110 is rotatably matched on the upper side of the working platform 100, a first T-shaped plate 117 is fixedly matched on the upper side of the rotating plate 110, a second T-shaped plate 118 is slidably matched on the upper side of the rotating plate 110, both sides of the second T-shaped plate 118 are meshed with the upper side of the rotating plate 110, and a planetary roller screw body 124 is clamped and matched between one side of the second T-shaped plate 118 and one side of the first T-shaped plate 117;

[0043] A first connecting column 132 is fixedly fitted on the upper side of the rotating plate 110 , and a plurality of tension and pressure sensors 133 are evenly fixedly fitted on both sides of the first connecting column 132 . The tension and pressure sensors 133 are snap-fitted with the planetary roller screw body 124 .

[0044] Working principle:

[0045] First, place the planetary roller screw body 124 between one side of the second T-shaped plate 118 and one side of the first T-shaped plate 117, and then slide the second T-shaped plate 118. The second T-shaped plate 118 drives the planetary roller screw body 124 to snap-fit ​​on one side of the first T-shaped plate 117. The circumferential side of the middle part of the planetary roller screw body 124 contacts the tension and pressure sensor 133, and then rotate the planetary roller screw body 124. The planetary roller screw body 124 measures the secondary friction torque through the tension and pressure sensor 133, thereby completing the measurement of the secondary friction torque of the planetary roller screw body 124.

[0046] A second T-shaped plate 118 is set up to position the planetary roller screw body 124 on one side of the first T-shaped plate 117 under the action of the second T-shaped plate 118, and the secondary friction torque of the planetary roller screw body 124 is measured by the pull pressure sensor 133. On the one hand, it is convenient to replace the planetary roller screw body 124 and improve the efficiency of replacing the planetary roller screw body 124. On the other hand, it improves the efficiency of measuring the secondary friction torque of the planetary roller screw body 124, making the process of measuring the secondary friction torque of the planetary roller screw body 124 more convenient.

[0047] In order to make the sliding process of the sliding plate 103 on one side of the U-shaped plate 101 more stable, the following structure is used for improvement: Figure 1-9 As shown, the bottom of the working platform 100 of this embodiment is fixedly matched with two U-shaped plates 101, and first guide grooves 102 are provided on both sides of one of the U-shaped plates 101, and a sliding plate 103 is slidably matched inside the first guide groove 102, and a first servo motor is fixedly matched inside the first guide groove 102, and a threaded rod 104 is fixedly matched at the output end of the first servo motor, and a threaded hole 105 is provided on one side of the sliding plate 103, and the threaded hole 105 is threadedly matched with the threaded rod 104, and a first fixing column 107 is fixedly matched between one end of the two sliding plates 103, and a second guide groove 106 is provided on one side of the working platform 100, and a third guide groove 114 is provided on one side of the rotating plate 110, and the inner portion of the third guide groove 114 is fixedly matched with the inner portion of the third guide groove 114. A second fixed column 115 is fixedly fitted thereon, and a first rotating column 108 is rotatably fitted between the second fixed column 115 and the first fixed column 107, and the first rotating column 108 is located inside the second guide groove 106, and a first through hole 109 is opened at one end of the first rotating column 108, and the first fixed column 107 is located inside the first through hole 109, and a second through hole 116 is opened at the other end of the first rotating column 108, and the second fixed column 115 is located inside the second through hole 116, and two fixed blocks 111 are fixedly fitted thereon on the upper side of the working platform 100, and a third through hole 112 is opened on one side of the fixed block 111, and fixed rods 113 are fixedly fitted thereon on both sides of the rotating plate 110, and the fixed rods 113 are located inside the third through hole 112.

[0048] When this embodiment is in use, the first servo motor is first started, and the output end of the first servo motor drives the sliding plate 103 to slide inside the first guide groove 102 through the threaded rod 104, and the sliding plate 103 drives the first rotating column 108 to move inside the second guide groove 106 through the first fixed column 107, and the first rotating column 108 drives the rotating plate 110 to rotate through the second fixed column 115, and the rotating plate 110 drives the fixed rod 113 to rotate inside the third through hole 112, thereby completing the adjustment of the position of the rotating plate 110.

[0049] The first guide groove 102 is set so that the sliding plate 103 can slide inside the first guide groove 102 under the action of the threaded rod 104, and the sliding direction of the sliding plate 103 is guided by the first guide groove 102, thereby reducing the problem of tilting of the sliding plate 103 during sliding and improving the stability of the sliding plate 103 during sliding.

[0050] In order to make the sliding process of the second rotating column 120 on the side of the first T-shaped plate 117 more stable, the following structure is used for improvement, such as Figure 1-9As shown, a fourth through hole 119 is provided on one side of the first T-shaped plate 117 of the present embodiment, and a second rotating column 120 is rotatably matched inside the fourth through hole 119. A plurality of guide blocks 121 are evenly distributed and fixedly matched on the outer side walls at both ends of the second rotating column 120. The guide blocks 121 are attached to one side of the first T-shaped plate 117. A first cross-shaped groove 122 is provided on one end of the second rotating column 120. A first cross-shaped plate 123 is fixedly matched on the first end of the planetary roller screw body 124. The first cross-shaped plate 123 is located in the first cross-shaped groove 122. 22, a fifth through hole 126 is provided on one side of the second T-shaped plate 118, a third rotating column 127 is rotatably fitted inside the fifth through hole 126, a second servo motor 125 is fixedly fitted on one side of the second T-shaped plate 118, one end of the third rotating column 127 is fixedly fitted on the output end of the second servo motor 125, a second cross-shaped groove 128 is provided on the other end of the third rotating column 127, a second cross-shaped plate 129 is fixedly fitted on the second end of the planetary roller screw body 124, and the second cross-shaped plate 129 is located at the second cross Inside the t-shaped groove 128, a placement plate 130 is fixedly matched on the upper side of the rotating plate 110, and two side plates 131 are fixedly matched on the upper side of the placement plate 130. The first connecting column 132 is fixedly matched on one side of the side plate 131. A clamp ring 134 is provided on the planetary roller screw body 124, and one end of the clamp ring 134 is matched with the tension pressure sensor 133. A first spring 136 is fixedly matched on one side of the first T-shaped plate 117, and a clamp block 135 is fixedly matched on one end of the first spring 136. The clamp block 135 is slidably matched on the planetary roller screw body 124. On the circumferential side of the column screw body 124, one end of the block 135 cooperates with the tension pressure sensor 133, and grooves 137 are opened on both sides of the second T-shaped plate 118. The inside of the groove 137 is fixedly fitted with a second connecting column 138, and one side of the second connecting column 138 is fixedly fitted with a third servo motor, and the output end of the third servo motor is fixedly fitted with a rotating shaft 139, and one end of the rotating shaft 139 is fixedly fitted with a gear 140, and the upper side of the rotating plate 110 is evenly fixedly fitted with a plurality of teeth 141, and the teeth 141 are meshed with the gear 140.

[0051] When the present embodiment is in use, the planetary roller screw body 124 is first placed between the first T-shaped plate 117 and the second T-shaped plate 118, and then the third servo motor is started. The output end of the third servo motor drives the gear 140 to rotate through the rotating shaft 139. Since the gear 140 is meshed with the tooth 141, the second connecting column 138 slides under the action of the gear 140. The second connecting column 138 drives the second T-shaped plate 118 to slide through the groove 137. The second T-shaped plate 118 drives the second cross-shaped groove 128 to slide into the circumferential side of the second cross-shaped plate 129 through the third rotating column 127. The planetary roller screw body 124 drives the first cross-shaped plate 123 to slide into the first The inside of the cross groove 122, and then the second servo motor 125 is started, the output end of the second servo motor 125 drives the third rotating column 127 to rotate inside the fifth through hole 126, the third rotating column 127 drives the second cross plate 129 to rotate through the second cross groove 128, the second cross plate 129 drives the first cross plate 123 to rotate through the planetary roller screw body 124, the first cross plate 123 drives the second rotating column 120 to rotate, the second rotating column 120 rotates inside the first T-shaped plate 117 through the fourth through hole 119, and the secondary friction torque of the planetary roller screw body 124 is measured by the tension and pressure sensor 133.

[0052] The fourth through hole 119 is set so that the first cross plate 123 can drive the second rotating column 120 to rotate inside the fourth through hole 119 under the action of the planetary roller screw body 124, and the rotation direction of the second rotating column 120 is guided by the fourth through hole 119, thereby reducing the problem of tilting of the second rotating column 120 during rotation and improving the stability of the second rotating column 120 during rotation.

[0053] In order to make the sliding process of the second clamping column 151 on the side of the side plate 131 more stable, the following structure is used for improvement: Figure 7-9As shown, both ends of the first connecting column 132 are provided with a fourth guide groove 142, two second springs 145 are fixedly fitted inside the fourth guide groove 142, a first clamping column 144 is fixedly fitted between one end of the two second springs 145, a clamping groove 146 is provided at one end of the first clamping column 144, and a fifth guide groove 143, a sixth guide groove 148 connected to the fifth guide groove 143, a seventh guide groove 147 connected to the sixth guide groove 148, and a seventh guide groove 148 connected to the seventh guide groove 147 are provided on one side of the side plate 131. The eighth guide groove 149 is connected to the outer surface of the housing 144, one end of the first clamping column 144 is located inside the fifth guide groove 143, the inside of the eighth guide groove 149 is fixedly fitted with a third spring 150, one end of the third spring 150 is fixedly fitted with a second clamping column 151, the second clamping column 151 is slidably fitted inside the eighth guide groove 149, the sixth guide groove 148, the seventh guide groove 147, and the fifth guide groove 143, one end of the second clamping column 151 is clamped with the clamping groove 146, and a driving groove 152 is provided on one side of the second clamping column 151.

[0054] When the present embodiment is in use, the staff first drives the second clamping column 151 to slide inside the eighth guide groove 149 and the seventh guide groove 147 through the driving groove 152, and one end of the second clamping column 151 slides out from the inside of the clamping groove 146, and then slides the first clamping column 144, and one end of the first clamping column 144 drives the second spring 145 to slide, and the other end of the first clamping column 144 slides from the fifth guide groove 143 to the inside of the fourth guide groove 142, and then the first connecting column 132 is removed from between the two side plates 131, thereby facilitating the replacement of the faulty tension and pressure sensor 133.

[0055] The eighth guide groove 149 is set to enable the second clamping column 151 to slide inside the eighth guide groove 149 under the action of the staff, and the sliding direction of the second clamping column 151 is guided by the eighth guide groove 149, thereby reducing the problem of tilting of the second clamping column 151 when sliding and improving the stability of the second clamping column 151 when sliding.

[0056] In order to drive the second T-shaped plate 118 to slide, the following two implementations are proposed:

[0057] Embodiment 1: In this embodiment, grooves 137 are provided on both sides of the second T-shaped plate 118, and a second connecting column 138 is fixedly matched inside the groove 137. A third servo motor is fixedly matched on one side of the second connecting column 138. A rotating shaft 139 is fixedly matched on the output end of the third servo motor, and a gear 140 is fixedly matched on one end of the rotating shaft 139. A plurality of teeth 141 are evenly distributed and fixedly matched on the upper side of the rotating plate 110, and the teeth 141 mesh with the gear 140, wherein the second T-shaped plate 118 slides under the drive of the gear 140;

[0058] Embodiment 2: The distinguishing feature of this embodiment from the above-mentioned embodiment 1 is that, in this embodiment, in order for the second T-shaped plate 118 to slide, a plurality of electric push rods may be provided on the upper side of the rotating plate 110, and one side of the second T-shaped plate 118 is fixedly fitted on the output end of the electric push rod, wherein the operating states of the plurality of electric push rods are synchronized and consistent.

[0059] The present invention is not limited to the above-mentioned embodiments. Anyone should be aware that any structural changes made under the enlightenment of the present invention, and any technical solutions that are the same or similar to the present invention, fall within the protection scope of the present invention. The technology, shape, and structural parts not described in detail in the present invention are all well-known technologies.

Claims

1. A device for measuring the friction torque of a planetary roller screw pair, characterized in that: include: A working platform (100), wherein a rotating plate (110) is rotatably engaged on the upper side of the working platform (100), a first T-shaped plate (117) is fixedly engaged on the upper side of the rotating plate (110), a second T-shaped plate (118) is slidably engaged on the upper side of the rotating plate (110), both sides of the second T-shaped plate (118) are meshed with the upper side of the rotating plate (110), and a planetary roller screw body (124) is snap-fitted between one side of the second T-shaped plate (118) and one side of the first T-shaped plate (117); A first connecting column (132) is fixedly engaged with the upper side of the rotating plate (110), and a plurality of tension and pressure sensors (133) are evenly distributed and fixedly engaged on both sides of the first connecting column (132), and the tension and pressure sensors (133) are snap-engaged with the planetary roller screw body (124).

2. A device for measuring friction torque of a planetary roller screw pair according to claim 1, characterized in that: Two U-shaped plates (101) are fixedly fitted at the bottom of the working platform (100), wherein first guide grooves (102) are provided on both sides of one of the U-shaped plates (101), a sliding plate (103) is slidably fitted inside the first guide groove (102), a first servo motor is fixedly fitted inside the first guide groove (102), a threaded rod (104) is fixedly fitted at the output end of the first servo motor, a threaded hole (105) is provided on one side of the sliding plate (103), and the threaded hole (105) is threadedly fitted with the threaded rod (104).

3. A device for measuring friction torque of a planetary roller screw pair according to claim 2, characterized in that: A first fixed column (107) is fixedly fitted between one end of the two sliding plates (103); a second guide groove (106) is provided on one side of the working platform (100); a third guide groove (114) is provided on one side of the rotating plate (110); a second fixed column (115) is fixedly fitted inside the third guide groove (114); a first rotating column (108) is rotatably fitted between the second fixed column (115) and the first fixed column (107); and the first rotating column (108) is located inside the second guide groove (106).

4. A device for measuring friction torque of a planetary roller screw pair according to claim 3, characterized in that: A first through hole (109) is formed at one end of the first rotating column (108), the first fixed column (107) is located inside the first through hole (109), a second through hole (116) is formed at the other end of the first rotating column (108), and the second fixed column (115) is located inside the second through hole (116).

5. The device for measuring the friction torque of a planetary roller screw pair according to claim 1, characterized in that: Two fixed blocks (111) are fixedly fitted on the upper side of the working platform (100), a third through hole (112) is provided on one side of the fixed block (111), and fixed rods (113) are fixedly fitted on both sides of the rotating plate (110), and the fixed rods (113) are located inside the third through hole (112).

6. The device for measuring the friction torque of a planetary roller screw pair according to claim 1, characterized in that: A fourth through hole (119) is provided on one side of the first T-shaped plate (117), and a second rotating column (120) is rotatably fitted inside the fourth through hole (119). A plurality of guide blocks (121) are evenly distributed and fixedly fitted on the outer side walls at both ends of the second rotating column (120), and the guide blocks (121) are attached to one side of the first T-shaped plate (117). A first cross-shaped groove (122) is provided on one end of the second rotating column (120), and a first cross-shaped plate (123) is fixedly fitted on the first end of the planetary roller screw body (124), and the first cross-shaped plate (123) is located inside the first cross-shaped groove (122).

7. A device for measuring friction torque of a planetary roller screw pair according to claim 1, characterized in that: A fifth through hole (126) is provided on one side of the second T-shaped plate (118), and a third rotating column (127) is rotatably engaged inside the fifth through hole (126); a second servo motor (125) is fixedly engaged on one side of the second T-shaped plate (118), and one end of the third rotating column (127) is fixedly engaged on the output end of the second servo motor (125); a second cross-shaped groove (128) is provided on the other end of the third rotating column (127); a second cross-shaped plate (129) is fixedly engaged on the second end of the planetary roller screw body (124), and the second cross-shaped plate (129) is located inside the second cross-shaped groove (128).

8. The device for measuring the friction torque of a planetary roller screw pair according to claim 1, characterized in that: A placement plate (130) is fixedly fitted on the upper side of the rotating plate (110), and two side plates (131) are fixedly fitted on the upper side of the placement plate (130). The first connecting column (132) is fixedly fitted on one side of the side plate (131). A clamp ring (134) is provided on the planetary roller screw body (124), and one end of the clamp ring (134) is fitted with the tension and pressure sensor (133).

9. The device for measuring the friction torque of a planetary roller screw pair according to claim 1, characterized in that: A first spring (136) is fixedly fitted on one side of the first T-shaped plate (117), and a clamping block (135) is fixedly fitted on one end of the first spring (136). The clamping block (135) is slidably fitted on the peripheral side of the planetary roller screw body (124), and one end of the clamping block (135) is fitted with the tension and pressure sensor (133). Grooves (137) are provided on both sides of the second T-shaped plate (118), and a second connecting column (138) is fixedly fitted inside the groove (137). A third servo motor is fixedly fitted on one side of the second connecting column (138), and a rotating shaft (139) is fixedly fitted on the output end of the third servo motor. A gear (140) is fixedly fitted on one end of the rotating shaft (139). A plurality of teeth (141) are evenly distributed and fixedly fitted on the upper side of the rotating plate (110), and the teeth (141) are meshed with the gear (140).

10. The device for measuring the friction torque of a planetary roller screw pair according to claim 1, characterized in that: Both ends of the first connecting column (132) are provided with a fourth guide groove (142), two second springs (145) are fixedly fitted inside the fourth guide groove (142), a first clamping column (144) is fixedly fitted between one end of the two second springs (145), a clamping groove (146) is provided at one end of the first clamping column (144), and a fifth guide groove (143), a sixth guide groove (148) connected to the fifth guide groove (143), a seventh guide groove (147) connected to the sixth guide groove (148), and an eighth guide groove (147) connected to the seventh guide groove (147) are provided on one side of the side plate (131). (149), one end of the first clamping column (144) is located inside the fifth guide groove (143), the inside of the eighth guide groove (149) is fixedly fitted with a third spring (150), one end of the third spring (150) is fixedly fitted with a second clamping column (151), the second clamping column (151) is slidably fitted inside the eighth guide groove (149), the sixth guide groove (148), the seventh guide groove (147), and the fifth guide groove (143), one end of the second clamping column (151) is clamped and fitted with the clamping groove (146), and a driving groove (152) is provided on one side of the second clamping column (151).

Images